Engine-governor.



No. 854,418. PATENTED MAY 21, 1907. s. s. HALL.

ENGINE GOVERNOR.

APPLIOATION FILED JAN. 4, 1907.

2 SHEETS-SHEET 1.

PATENTED MAY 21, 1907.

S. S. HALL. ENGINE GOVERNOR. APPLICATION FILED JAN. 4, 1907.

2 SHEBTSSHEET 2.

tinrrEE STATES EarEEr oEEroE.

STEPHEN S. HALL, OF PORTLAND, CONNECTICUT, ASSIGNOR T THE PICKERINGGOVERNOR 00., OF PORTLAND, CONNECTICUT, A COR- PORATION.

ENGINE-GOVERNOR.

Patented May 2i, 1907.

Application filed January 4,1907- Serial No. 350,842.

To all whom it may concern: 7

Be it known that I, STEPHEN S. HALL, a citizen of the United States,residing at Fortland, in the county of Middlesex and State ofConnecticut, have invented a new and useful Improvement inEngine-Governors and I do hereby declare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,which said drawings constitute part of this specification, andrepresent, in

Figure 1 a side view of the lower portion of an engine governorpartially broken away to show my improved valve stem adjusting device.Fig. 2 a front view of a standard type of governor to which my inventionis applied. Fig. 3 an enlarged sectional view ot my valve stem adjustingdevice detached. Fig. 4 a perspective view of a disk such as may besubstituted for the balls. Fig. 5 a sectional view illustrating one formwhich my invention may assume to apply downward pressure. Fig. 6 abroken sectional view illustrating a still further modification ofarrangement for downward pressure.

This invention relates to an improvement in engine governors andparticularly to means for adjusting the valve rods therefor. Variousdevices for this purpose have been arranged but usually they are in suchclose relation to the valve chamber that they become so heated that theycannot be conveniently adjusted.

The object of this invention is a simple arrangement of parts by whichthe adjustment of the valve rod may be conveniently and quickly made;and the invention consists in the construction hereinafter described andparticularly recited in the claims.

In carrying out my invention I form the usual speeder collar 2 with alower extension 3 and with an arm 4 at right angles thereto, and insteadof having a continuous valve stem I divide the stem into two members, anu per stem 5 and a lower stem 6, the stem 6 being fixed in the extension3 and the stem 5 entering a vertical passage 7 in the upper end of thecollar 2. This vertical passage connects with the passage in the arm 4forming a curved chamber 8 in which are located a series of balls 9. Themain portion of the chamber 8 is slightly larger in diameter than thediameter of the stem 5 and the balls correspond in diameter to thediameter of the chamber. In other words the upper end of the passage iscontracted so that the balls cannot escape when the upper stem 5 isremoved.

To prevent the withdrawal of the stem for the turning thereof, I mount ascrew 10 in the upper end of the collar, the end of the screw adapted toenter a slot 11 formed in the stem 5. The outer end of the horizontalarm 4 is enlarged to receive a nut 1'2 which may be secured therein by atransverse pin 13. This nut receives a screw 14 which is adapted toenter the chamber 8 and is provided at its outer end with a hand wheel15 or other suitable means for conveniently turning the screw. When itis desired to raise the valve stem the screw let is turned forcing theballs 9 inward and against the lower end of the stem 5 and raising it.As above described the adjusting device is arranged to operate a valvestem in which the pressure is downward, or in which the valve stem movesdownward to close the valve, and to permit the stem to fall the screw isturned in the reverse direction allowing the balls to drop by gravityand the stem to enter the chamber 8. The speeder toe-piece 16 engageswith the collar 2 in the usual way for raising and lowering the sameunder the tension of the speeder spring 17.

- It is apparent that instead of employing balls as shown in Fig. 3 ofthe drawings, disks may be used. with substantially the same effect, thechamber 8 being correspondingly formed. The arm 4 may be of any suitablelength to clear the speeder shaft and to carry the operating handle 16beyond the valve chamber. To operate a valve stem in a governor in whichthe valve is closed by the raising of the stem, the balls may bereversed in position; thus as shown in Fig. 5 of the drawings, thespeeder collar 2 may have a horizontal extension 18 projecting to oneside from the upper end or at a point above the lower end of avertically movable stem or shaft 5, and this stcmpr shaft 5 may have agroove 1.) in one side slightly less in depth than half thecircumference of the balls, the lower end of the groove forming ashoulder 20 on which the lowermost ball of the series will rest and sothat as the balls are forced into the casing they will force the stem orshaft 5 downward;

i follow the channel or. when pressure is relieved, they will permil;the stem to lift. hen it lifts, however, as more than half of thecircumference of the balls-.stands'in a plane outside the plane of thestem, it will be seen that they will into the horizontal section 18.Instead of providing the stem with the groove 19 as above described, thestem or shaftmay be provided at its lower end with a foot 21', as shownin Fig. 6, against which the lowermost ball of the series will rest, andso that inward pressure upon the balls will force the stem downwardinthe same manner as last above described. It Will thus be seen that thevertically movable valve stem may be raised or lowered accord ing to thedirection of pressure which it is necessary to overcome.

I claim 1 1 1. The herein described valve stem adjusting device comrising a collar, an arm integral with the co lar and projectingtherefrom, a curved passage connecting the collar and arm, ballsarranged within said passage, a valve stem extending into said passageand into contact with said balls, and a screw adapted to enter said armand bear against said balls, substantially as described.

2. The herein described governor valve stem adjusting device comprisinga collar, an integral arm extending horizontally therefrom, a passagethrough said collar and arm, balls within said passage, a valve stementering the collar and bearing on said balls, a screw entering said armand adapted to bear against said balls, substantially as described.

3. The herein described valve stem adjusting device comprising a collar,an inte gral horizontal arm, a continuous passage through said collarand arm, a valve stem entering said collar, balls arranged within saidpassage, a nut mounted in the outer end of said arm, and a screw passingthrough said nut and adapted to bear against said balls, substantiallyas described.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

STEPHEN S. HALL. Witnesses:

E. OsTERGREN, J. A CHAPMAN.

